威灵仙提取液的Q235钢缓蚀性能  

Corrosion inhibiting capacity of the extracts from Chinese clematis for steel Q235

作　　者：梁文[1] 王敏[1] 张文凯[1] 周桃玉[1] 

机构地区：[1]南京工业大学环境学院,江苏省工业节水减排重点实验室,江苏南京211816

出　　处：《工业水处理》2015年第5期59-62,共4页Industrial Water Treatment

摘　　要：实验研究了威灵仙提取液的制备及其对模拟工业循环冷却水中Q235钢的缓蚀性能。紫外吸收光谱、电化学极化曲线、阻抗谱以及腐蚀失重等实验结果表明,综合考虑溶出率与缓蚀率,80℃水溶提取效果好于醇、酸助提;提取液投加量为7.52×10-3 g/m L时对Q235钢的缓蚀率达92.1%、腐蚀速率降至0.043 0 mm/a;缓蚀类型属于阳极型腐蚀抑制。The extract from clematis has been prepared and its corrosion inhibiting capacity for steel Q235 in simulated industrial circulating cooling water investigated. The results by UV-visible spectroscopy, electrochemical polarization curves, electrochemical impedance spectroscopy and weight loss methods indicate that considering the dissolution rate and corrosion inhibiting rate comprehensively, the water soluble extracting effect at 80 ℃ is better than that of alcohol or acid extractant. When the dosage of extracted solution is 7.52 ×10^-3 g/mL,the corrosion inhibiting rate for steel Q235 can reach 92.1% and corrosion rate can be reduced to 0.043 0 mm/a. The corrosion inhibition is of anodic type.

关 键 词：威灵仙提取液 缓蚀 Q235钢 

分 类 号：X703[环境科学与工程—环境工程]